Type-writing machine.



N. H. ANDERSUN. TYPE WRITING MACHINE. APPLICATION HLED MAY 7. 1910.

1,182,338. Patented May 9,1916.

IS F M 9 w i H) l n nism= for typewriting machines, and with w on itsdriving shaft, and retained in place UNITED STATES 7 OFFICE.

urns H. ANDERSON, or MIDDLETOWN, 'conivncrrcu'r, ASSIGNOR "ro THENOISELESS TYPEWRITER COMPANY, or MInnLnrrowN, connncrroor, A coaronarrouor CONNECTICUT.

TYPE-WRITING ivrscnmn.

Specification of Letters Patent.

Patented May 9,1916,

VVriting Machines, of which the following is a full, clear, and exactdescription, such as will enable others skilled in the art to which itappertains tomake and use the same. r

This invention relates to ribbon mecharegard to the more specificfeaturesthereof, to ribbon spool construction. 1

One of the objects of the present invention is to provide a simple andpractical device of theabove character, having few parts, which willbecheap to manufacture, easy to assemble and etficient in use.

Anotherobject is to providea device 'of the" above character which willbe simple in construction, enabling a ribbonftobe quickly placed upon.or removed from the ribbon spool.

A further object is to provide mechanism of the above character in whichthe cover of the ribbon spool orreel is not likely to become wedged inengagement therewith.

A further object is to prov-ide'a self-contained ribbon spool, that is,one in which both heads and hub will rotate together as a unit, andallowing for the assembling or disassembling of the ribbon convenientlyand efiiciently in the coil form in which it is supplied by themanufacturers.

Other objects will be in part obvious and in part pointedout-hereinafter. I

This invention accordingly consists in the features -of construction,combinations of elements and arrangement of parts which will beexemplified in the construction hereinafter set forth, and the scope ofthe application of which will be indicated in the following claims.

In the accompanying drawlng, wherein is shown one of various possibleembodi-' ments of this invention, Figure 1 is a vertical sectional viewof part of a typewnting machine sufliclent to illustrate one embodimentof the present invention as applied thereto; Figs. 2 and 3 are detailviews of various parts.

lar 1.,,partsthroughout the several views of the drawing. a a

While the present invention is herein shown and described with referenceto a constructlon adapted for use with the narrow ribbon for visibletypewriters, and more particularly to the ribbon mounting employedin anoiseless typewriting machine, 7

itlis mderstood that the invention may be appl ed to other forms ofmachines employlng either a narrow or broad ribbon if so desired.

When a ribbon spool is mounted to rotate thereon" by a nut threaded onthe shaft, a shghtspace is preferably provided between the looselymounted spool-head and the nut, otherwise the friction between the headand the nut will interfere with therotation of the spool.Notwithstanding this precaution, the uneven winding of the ribbon uponthe spool will frequently raise the spool-head until the space referredto is eliminated and the objectionable friction willthen ensue,-

as the nut will act as a drag orvbrake opposing the rotary motion ofthe-spool, and

in. some machines interfering with the efliresents a rotarydrivingspindle 'or support surrounded by a stationary ribbon cup 2resting on the frame 3 and surrounding the lower part of a ribbon spool.This spool comprises a. central hollow hub 4 having secured thereto asupporting plate 5 loosely mounted upon the spindle 1 and provided atthe lower part thereof with a gear 6 adapted to mesh with a driven gear7, which in turn meshes with a gear 8 fast on the driving spindle. Thegear 7 is adapted to be thrown in and out of mesh with the gears 6 and 8simultaneously with the action of a corresponding or similar ribbonmechanism at the opposite side of the machine, for the purpose ofreversing the feed of theribbon,

but as this mechanism forms no part of the present invention a furtherdescription thereof is unnecessary.

arried by a hollow cylindrical hub 4: are a plurality of flat springarms 9. such as shown in the detail view, Fig. 3. having;

hook shaped ends 10 projecting above the,

- end is preferably rounded whereby the cover a ribbon 16 passing may bequickly centered in order more readily to engage the spindle whenapplied thereto. a The boss 13 is preferably knurled about its peripheryat 15 wherebythe same may be firmly grasped by the operator whenhandling the same.

when it is desired to change through a slot 17 in the cup 2, which ispreferably mounted on a ribbon core 18 adapted to surround the hub 4,the cover 12 is removed by an upward pull on the boss 13 wherebythersame becomes readily disengaged from the spring arms 9. The ribbon16 and core 18 may then be slipped off the hub 4 and a new ribbonmounted thereon, after which the cover 12 is slipped over the projectingend 14 of the driving spindle and pressed downwardly until the hookshaped ends 10 snap into operative relation with the holes 11 in thecover plate. a

It is thus seen that this invention provides for a simple and practicaldevice allowing the operator to quickly change the ribbon and alsoovercomes the objection common in ribbon mountings where the cover has athreaded connection with the spool or spindle and is likely to becometightly wedged thereon during the operation of the machine?" Inoperation,

I I As many changes couldbe made in the above construction and manyapparently widely different embodiments of this invention could he madewithout departing from the scope thereof, it is intended that all mattercontained in the above description or shown in the accompanying drawingsshall be interpreted as illustrative and not spool adapted to abut theend of said hub,

andjspring arms carried by said spool engaging said cover.

' 2. In a ribbon mounting for typewriting machines, in combination, arotatable shaft, a disk ribbon support thereon having a hub about saidshaft, spring fingers on one of said parts ,projectingupward beyond saidhub, and a disk cover having a recessed boss to fit over said shaft and,frictionally engage said fingers.

3. In a ribbon mounting for typewriting machines, in combination, arotatable shaft, a disk ribbon support thereon having a liol low hubabout said shaft, spring fingers on one of' said parts projecting upwardabove said hub, and a disk cover having an apertured boss to "fit oversaid-shaft and compress said spring fingers to maintain frictionalattachment of said cover.

In testimony whereof I aflix my signature in the presence of twowitnesses.

NILS H. ANDERSON.

Witnesses:

EDWARD H. CLARK, J. L. ATHERTON.

